<正>ONE day in April 2007,a representative from the China Marrow Donor Program(CMDP)telephoned Li Li,a judge at the People’s Court of Fangshan District in Beijing."A little girl from Shanghai has a rare form of leukemia.We have found you to be a suitable blood match.Would you like to help her live?"Asked the representative.At first stunned,Li Li soon realized this was an opportunity to make a difference.The Data Bank of Chinese Hematopoietic Stem Cell Donors,